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lidiya [134]
3 years ago
12

Which of the following describes an accelerated motion

Physics
1 answer:
Naily [24]3 years ago
3 0
Accelerated motion such as a vehicle (car) or a moving item such as a (football thrown in the air)
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What would happen to the marbles speed if we had longer tables
Zanzabum

Answer:

The marble will start to decrease in speed

Explanation:

The longer the table is the more the marbles speed would decrease because marbles can only be fast for a certain amount of time

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3 years ago
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James Cameron piloted a submersible craft to the bottom of the Challenger Deep, the deepest point on the ocean's floor, 11,000 m
Over [174]

Answer:

4.1\cdot 10^8 N

Explanation:

First of all, we need to find the pressure exerted on the sphere, which is given by:

p=p_0 + \rho g h

where

p_0 =1.01\cdot 10^5 Pa is the atmospheric pressure

\rho = 1000 kg/m^3 is the water density

g=9.8 m/s^2 is the gravitational acceleration

h=11,000 m is the depth

Substituting,

p=1.01\cdot 10^5 Pa + (1000 kg/m^3)(9.8 m/s^2)(11,000 m)=1.08\cdot 10^8 Pa

The radius of the sphere is r = d/2= 1.1 m/2= 0.55 m

So the total area of the sphere is

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And so, the inward force exerted on it is

F=pA=(1.08\cdot 10^8 Pa)(3.8 m^2)=4.1\cdot 10^8 N

8 0
3 years ago
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what happens to the volume when temperature is held constant and the pressure is increased to 125 kPa
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The volume decreases, by a factor of

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3 years ago
A train travels 76 kilometers kilometers in 2 hours and then 54 kilometers in 5 hours . What is tuts average speed?
Elena-2011 [213]
Total distance = 76+54 = 130km
total time = 2+5 = 7hrs
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The velocity - time graph of a ball of mass 25g moving on road is as given below:
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25g of mass will require 25g of opposite force on the ball from the road and opposition is moving upward to work on the ball 
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3 years ago
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